No purchase, payment, or contribution necessary to enter or win. Contributing will not improve chances of winning. Void where prohibited. Entries must be received by 11:59 p.m. on 6/30/11. You may enter by contributing to Sponsor here. Alternatively, click here to enter without contributing. Four winners will each receive the following prize package: one round-trip ticket within the continental U.S. to a destination to be determined by the Sponsor in its sole discretion; hotel accommodations for one; and dinner with President Obama on a date to be determined by the Sponsor in its sole discretion (approximate combined retail value of all prizes $1,075). Odds of winning depend on number of eligible entries received. Promotion open only to U.S. citizens, or lawful permanent U.S. residents who are legal residents of 50 United States and District of Columbia and 18 or older (or of majority under applicable law). Promotion subject to Official Rules and additional restrictions on eligibility. Click here for full details, restrictions, and Official Rules. Sponsor: Obama for America, 130 E. Randolph St., Chicago, IL 60601.